The correct options are
A Use the waste water from the kitchen for watering plants.
B Use the non-conventional energy sources such as solar energy, wind energy, etc.
C Ensure steps for rainwater harvesting.
The Following steps can be taken by people for resource conservation.
1. Use waste water from the kitchen for watering plants.
2. Plant trees in public places.
3. Use the non-conventional energy sources such as solar energy, wind energy, etc. to the maximum.
4. Ensure steps for rainwater harvesting.